Question

Present Value	Years	Interest Rat	Future Value	Equation
$181	5		$317
$335	17		$1,080
$48,000	13		$185,382
$40,353	30		$531,618

Solve for the unknown interest rate in each of the following (round to 2 decimals)   

Answer 1

	Present Value($)	Years	Interest Rate%	Future Value($)
Solution 1	181	5	11.86%	317
Solution 2	335	17	7.13%	1080
Solution 3	48000	13	10.95%	185382
Solution 4	40353	30	8.97%	531618

Formula used	Future Value= Present value(1+rate%)^no. of years
Solution 1	317=181(1+r)^5
	317/181=(1+r)^5
	(1.7513812)^(1/5)=1+r
	1.118603-1=r
	.118603=r
	11.86%=r
Solution 2	1080=335(1+r)^17
	1080/335=(1+r)^17
	(3.22388)^(1/17)=1+r
	1.071284-1=r
	0.071284=r
	7.13%=r
Solution 3	185382=48000(1+r)^13
	185382/48000=(1+r)^13
	(3.862125)^(1/13)=1+r
	1.1095336-1=r
	0.1095336=r
	10.95%=r
Solution 4	531618=40353(1+r)^30
	531618/40353=(1+r)^30
	(1.317418)^(1/30)=1+r
	1.089743-1=r
	0.089743=r
	8.97%=r

Hope this solve all your queries.